Results 251 to 260 of about 167,172,128 (305)

Comment on ‘Coefficient of performance of Stirling refrigerators’

European Journal of Physics, 2020
Abstract This comment examines an article that develops a counterclockwise reversible Stirling cycle whose coefficient of performance equals that of a Carnot refrigerator. Unfortunately, among other issues, the proposed cycle is never in thermodynamic equilibrium and thus cannot match an idealized reversible Carnot.
Robert H Dickerson, Jochen Mottmann
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On the Performance of a Test for Coefficient of Variation

Calcutta Statistical Association Bulletin, 1992
Approximate standard errors (s.e) of sample coefficient of variation (c.v.) are available in the literature (Kendall and Stuart, 1977; Serfting 1980). Using these s.e.'s a large sample test can be constructed to test for the specified value of population c.v. The test can also be justified on the principles of Wald test.
Aruna Rao, K., Vidya, R.
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Linear irreversible thermodynamics and coefficient of performance

Physical Review E, 2006
Following the recent proposal by Van den Broeck for a heat engine [Phys. Rev. Lett. 95, 190602 (2005)], we analyze the coefficient of performance of a refrigerator in two working regimes using the tools of linear irreversible thermodynamics. In particular, one of the analyzed regimes gives a coefficient of performance which could be considered as the ...
B Jiménez, de Cisneros, L A, Arias-Hernández, A Calvo, Hernández   +2 more
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Learning performance of coefficient-based regularized ranking

Neurocomputing, 2014
The regularized kernel methods for ranking problem have attracted increasing attention recently, which are usually based on the regularization scheme in a reproducing kernel Hilbert space. In this paper, we go beyond this framework by investigating the generalization ability of ranking with coefficient-based regularization.
Hong Chen 0004, Zhibin Pan, Luoqing Li
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Improved EASI coefficients: Their derivation, values, and performance

Journal of Electrocardiology, 2002
The EASI lead system, which is based on the dipole hypothesis of vectorcardiography, offers the possibility of deriving the standard 12-lead electrocardiogram (ECG) and other desired leads from ECGs recorded at only 4 sites; it uses the Frank E, A, and I electrode locations, a fourth electrode location (S) at the manubrium, and a reference electrode ...
Dirk Q, Feild, Charles L, Feldman, B Milan, Horácek   +2 more
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Detection performance of the circular correlation coefficient receiver

IEEE Transactions on Acoustics, Speech, and Signal Processing, 1986
The complex circular correlation detector is analyzed for the case of one complex sinusoid in complex white Gaussian noise. The distribution function of the squared modulus of the circular serial correlation coefficient is found when no signal is present, allowing computation of the detection threshold.
Pakula, Lewis, Kay, Steven M.
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Performance of Thermoacoustic Refrigerators: Cooling Load and Coefficient of Performance

Heat Transfer: Volume 3, 2008
Thermoacoustic refrigeration is an environmentally safe refrigeration technology that has evolved over the past three decades [1–5]. The influence of working fluid on the performance of the thermoacoustic refrigerator (TAR) expressed in terms of the cooling load and the coefficient of performance is discussed in the paper.
Cila Herman, Christopher Lavin, Zdeneˇk Tra´vni´cˇek   +2 more
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The Performance of Random Coefficient Regression in Accounting for Residual Confounding

Biometrics, 2006
Summary Greenland (2000, Biometrics56, 915–921) describes the use of random coefficient regression to adjust for residual confounding in a particular setting. We examine this setting further, giving theoretical and empirical results concerning the frequentist and Bayesian performance of random coefficient regression.
Gustafson, Paul, Greenland, Sander
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Coefficients of performance of hydride heat pumps

Journal of the Less Common Metals, 1983
Abstract A model for calculating the coefficients of performance (COPs) is presented for a chemical heat pump which contains two metal hydrides and which consists of four reactors. Two reactors contain the first metal hydride MH 1 and the other two contain the other metal hydride MH 2 .
T. Nishizaki, K. Miyamoto, K. Yoshida
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